San Francisco, CA (Sports Network) - San Francisco Giants slugger Barry Bonds and New York Yankees players Jason Giambi and Gary Sheffield are just some of the professional athletes who received steroids that came from the Bay Area Laboratory Co-Operative (BALCO), according to published reports.

The San Francisco Chronicle indicates that Bonds' trainer, Greg Anderson, distributed the illegal performance-enhancing drugs to the baseball stars, according to information furnished the government and shared with the newspaper.

Other professional athletes were also implicated in the report, including former Oakland Raiders linebacker Bill Romanowski, and baseball players Benito Santiago, Randy Velarde and Marvin Bernard.

None of the athletes were said to have used the drugs, although they did obtain them.

"We continue to adamantly deny that Barry was provided, furnished or supplied any of those substances at any time by Greg Anderson," Michael Rains, an attorney for Bonds, said Monday.

Four men were charged last month with distributing illegal drugs, including steroids and human growth hormones. Those pinpointed in the 42-count indictments included Anderson, BALCO president and CEO Victor Conte Jr., BALCO vice president James J. Valente and track and field coach Remi Korchemny. All were charged with distributing anabolic steroids but pleaded not guilty to the charges.

The scheme allegedly took place between December 2001 and September 2003, with the defendants conspiring to defraud the United States through the distribution of illegal drugs. The men allegedly distributed the steroids through the form of a testosterone-based cream, mixing the testosterone with the cream to intentionally conceal the effects of such a contraband.

They also distributed a liquid drug called tetrahydragestrinone (THG), a designer steroid. Human growth hormones were also given out unlawfully to athletes to improve their performance.

These claims could prove especially devastating to Bonds, who has put together one of the best four-year spans in baseball history over the last four seasons, including a record-shattering 2001 campaign.

During that season, Bonds hit an unprecedented 73 home runs. He has hit over 40 homers each of the last four seasons, while also posting an on-base percentage of over .500 for each of the past three years.